Global Patent Index - EP 1026870 A1

EP 1026870 A1 2000-08-09 - System and method to prevent unauthorised calling

Title (en)

System and method to prevent unauthorised calling

Title (de)

Verfahren, System und Vorrichtung zum Erkennen einer widerrechtlichen Aufschaltung einer Kommunikationseinrichtung

Title (fr)

Système et méthode pour la prévention d'appels frauduleux

Publication

EP 1026870 A1 (DE)

Application

EP 99117637 A

Priority

DE 19904959 A

Abstract (en)

The method involves connecting a detector at one point in a subscriber line to detect the times when the subscriber line is engaged. A second detector is connected at a second position on the subscriber line to detect the times when it is engaged. The engaged times are detected in both detectors for a given time period. Stored engaged times are compared. If the engaged times do not match, an unauthorized connection is indicated. Independent claims are included for a system for performing the method and a detector device.

Abstract (de)

Durch unberechtigtes Aufschalten und widerrechtliches Nutzen von Fernsprechleitungen kann ein erheblicher Schaden entstehen. Eine Abhilfe schafft ein Verfahren, ein System und eine Vorrichtung, die eine unberechtigte Aufschaltung an einer Teilnehmeranschlussleitung feststellen und orten kann. Das Verfahren zeichnet sich durch folgende Schritte aus: a) Anschalten einer ersten Detektoreinrichtung (90a) an eine erste vorbestimmte Stelle einer Teilnehmeranschlussleitung (5) zum Erfassen von Belegungszeiten dieser Leitung; b) Anschalten einer zweiten Detektoreinrichtung (90b) an eine zweite vorbestimmte Stelle der Teilnehmeranschlussleitung (5) zum Erfassen von Belegungszeiten; c) Erfassen von Belegungszeiten der Teilnehmeranschlussleitung (5) in den beiden Detektoreinrichtungen (90a, 90b) während einer vorbestimmten Zeitspanne; d) Vergleichen der Belegungszeiten; e) bei Nicht-Übereinstimmung der verglichenen Belegungszeiten wird eine unberechtigte Aufschaltung einer Endeinrichtung auf die Teilnehmeranschlussleitung (5) signalisiert.

IPC 1-7 (main, further and additional classification)

H04M 3/38; H04M 1/66; H04M 1/68

IPC 8 full level (invention and additional information)

H04M 1/66 (2006.01); H04M 3/38 (2006.01); H04M 3/20 (2006.01); H04M 3/36 (2006.01)

CPC (invention and additional information)

H04M 1/66 (2013.01); H04M 3/38 (2013.01); H04M 3/205 (2013.01); H04M 3/36 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1026870 A1 20000809; EP 1026870 B1 20040317; AT 262248 T 20040415; DE 19904959 A1 20000810

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